Greater BOSTON Urban Fabrics City Map: PRINTGreater BOSTON, Massachusetts. Explore Greater Boston with its rivers and docks, abstracted into a figure ground, or block, plan. The map drawing centers on the heart of Boston on the Shawmut Peninsula, surrounded by the Massachusetts Bay and the Charles River and extends to Somerville in the northwest, Chelsea in the northeast, Castle Island in the southeast and Mission Hill Fort Hill in the southwest. The iconic pathways of Boston Common and Boston